Briefs : Energy
Solar-Powered Device Generates Electricity Through Ion Transport

By binding photosensitive dyes to common plastic membranes and adding water, chemists have made a new type of solar power generator. The device is similar to familiar silicon...

Briefs : Energy
Cobalt Oxygen-Evolving Catalysts for Clean Solar Fuel

By splitting a water molecule into two atoms of hydrogen and one of oxygen, scientists can use the Sun’s energy to make a clean fuel. Splitting a water molecule requires a metal catalyst to get the reaction started. Recently, much scientific attention has focused on cobalt, a relatively...

Briefs : Energy
High-Power Solid-State Power Amplifier System

NASA Marshall Space Flight Center (MSFC) has developed a High-Power Solid-State Power Amplifier System that combines 1-KW modules (16 amps total) to generate up to 16KW of radio frequency (RF) power from 230 MHz. The NASA device is a first step toward increasing the power of solid-state power amp...

Briefs : Energy
Aluminum as a Fuel

Batteries and combustion engines each have distinctive benefits and limitations. Batteries have simple construction and operate silently; however, their energy density (i.e., the energy per unit volume) is poor, and...

Briefs : Energy
High-Energy Lithium Flow Cells with Sulfur Anodes

Li-ion batteries offer considerable advantages such as high gravimetric and volumetric energy densities, and good calendar life and shelf life compared to aqueous systems such as Pb-acid, Ni-Cd, and Ni-MH. Various Li-ion chemistries with different Li-intercalating cathodes have attained...

Briefs : Energy
Generating Electricity with Energy-Harvesting Yarns

Researchers have developed yarns that generate electricity when they are stretched or twisted. The “twistron” yarns are constructed from carbon nanotubes — hollow cylinders of carbon...

Briefs : Energy
Flexible, Water-Based Lithium-Ion Batteries

Researchers have developed a lithium-ion battery that uses a water-salt solution as its electrolyte — reaching the 4.0- Volt mark for electronics such as laptops — without the fire and...

Briefs : Energy
Searching for the Failure Mechanisms in Lithium-Sulfur Batteries

It's difficult to see the details of atomic and topographical changes that lead to battery failure. However a team of researchers developed a method to see reactions leading to...

Briefs : Transportation
Efficient Packaging Process for One-Piece Deployable Thin Membrane

NASA’s Marshall Space Flight Center is building a small CubeSat that uses an 85-m2 solar sail deployed from a central location to capture the push of photons...

Briefs : Energy
Flexible, Gravity-Fed Heat Pipe

The advent of cryocooler technology ushers in an era where a cryogenic environment is created and maintained locally. It is no longer necessary to transport cryogen from a factory where it is produced to the...

Briefs : Energy
Cryo-Fluid Capacitor (CFC) for Solid-State Storage and Supply-on-Demand of Cryogenic Fluids

Storage and transfer of fluid commodities such as oxygen, hydrogen, natural gas, nitrogen, argon, etc. are absolute necessities in virtually every industry. These fluids are typically contained in one of two ways: as low-pressure cryogenic liquids, or as...

Briefs : Energy
Wireless Charging of Moving Electric Vehicles

If electric cars could recharge while driving down a highway, it would virtually eliminate concerns about their range and lower their cost, perhaps making electricity the standard fuel for vehicles. Researchers have wirelessly transmitted electricity to a nearby moving object, which could advance...

Briefs : Energy
Wearable Solar Thermoelectric Generator

Energy harvesting is a diverse field encompassing many technologies that involve a process that captures small amounts of energy that would otherwise be lost as heat, light, sound, vibration, or...

Briefs : Materials
Advanced Carbon Aerogels for Energy Applications

Carbon aerogels (CAs) are nano-porous carbons comprising a particularly significant class of carbon nano-materials for a variety of sustainable energy applications. Carbon aerogels are...

Briefs : Mechanical & Fluid Systems
Inexpensive Method for Manufacturing Supercapacitor Electrodes

Supercapacitors can store and deliver energy faster than conventional batteries. But to realize advanced applications, supercapacitors need better electrodes, which connect the...

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